NOTE 7: ACQUIRED LOANS, LOSS SHARING AGREEMENTS AND FDIC INDEMNIFICATION ASSETS: Business Acquisition Fair Value and Expected Cash Flows Policy (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accretable yield adjustment affecting interest income	$ 2,900,000		$ 2,900,000
Remaining accretable yield adjustment affecting interest income	932
Minimum
Reclassification of discounts from non-accretable to accretable (adjustment)	0	$ 0	0	$ 0
Maximum
Reclassification of discounts from non-accretable to accretable (adjustment)	$ 5,100,000	$ 5,100,000	$ 10,400,000	$ 10,400,000